<!-- 模态框 - 可重用 -->
<div class="modal" id="commonModal">
    <div class="modal-content">
        <div class="modal-header">
            <div class="modal-title" id="modalTitle">标题</div>
            <button class="close-btn" onclick="closeModal()">&times;</button>
        </div>
        <div id="modalBody">
            <!-- 动态内容 -->
        </div>
    </div>
</div> 